secrets de la science américaine / J.Ph. Baxter ; traduction M. Vincent Scientists against time / by James Phinney Baxter ; [forew. by Vannevar Bush] Rockets and guided missiles / John Humphries ; with a forew. by A.D. Baxter Stand by to Surface / by Richard Baxter Superimposed load firearms 1360-1860 / D.R. Baxter
